:root {
  color-scheme: light;
  --paper: #f7f5ef;
  --ink: #292d26;
  --muted: #6b6c60;
  --rule: #d8d6ca;
  --accent: #4f5a40;
  --serif: Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-family: var(--serif);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 2rem; }
body { margin: 0; min-height: 100svh; display: flex; flex-direction: column; }
main { flex: 1; }
img { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: 0.25em; }
a:hover { color: var(--accent); }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
[hidden] { display: none !important; }
.wrap { width: min(1120px, calc(100% - 112px)); margin-inline: auto; }

.skip-link {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 10;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  min-height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  border-bottom: 1px solid var(--rule);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 30px; height: 34px; opacity: 0.86; }
.brand > span { font-size: 14px; line-height: 1.32; letter-spacing: 0.07em; }
.brand-second-line { display: block; }
.nav-link { display: inline-flex; align-items: center; font-size: 15px; text-decoration: none; }
.nav-link:hover { text-decoration: underline; }

.introduction { text-align: center; padding: 66px 0 80px; }
.crest { width: 150px; height: auto; margin: 0 auto 32px; opacity: 0.86; }
h1 { margin: 0; font-weight: 400; font-size: clamp(38px, 5.6vw, 76px); line-height: 1.12; letter-spacing: -0.047em; text-wrap: balance; }
.tagline { margin: 22px 0 0; color: var(--muted); font-size: 18px; line-height: 1.6; }

.books { padding-bottom: 58px; scroll-margin-top: 28px; }
.section-heading { display: flex; align-items: center; gap: 24px; }
.section-heading h2 { margin: 0; font: 500 11px/1.4 var(--sans); text-transform: uppercase; letter-spacing: 0.2em; }
.section-rule { flex: 1; height: 1px; background: var(--rule); }
.catalogue { padding-top: 36px; }
.empty-state { padding: 30px 0 37px; text-align: center; }
.empty-state .empty-title { color: var(--ink); font-size: 28px; line-height: 1.25; font-style: italic; margin: 0 0 14px; letter-spacing: -0.02em; }
.empty-state p { color: var(--muted); font-size: 15px; line-height: 1.6; margin: 0; }
.book-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: start; gap: 48px 30px; }
.book { min-width: 0; }
.book:has(lulu-buy-button[variant="product-showcase"]) { grid-column: 1 / -1; }
.book-title { font-size: 22px; font-weight: 400; line-height: 1.35; margin: 0 0 18px; }
lulu-buy-button { display: block; min-width: 0; max-width: 100%; }
.book-status { color: var(--muted); font-size: 14px; line-height: 1.6; margin: 16px 0 0; }
.book-links { display: flex; flex-wrap: wrap; gap: 12px 22px; padding-top: 18px; font-size: 14px; }
.retry { color: var(--ink); border: 0; border-bottom: 1px solid var(--rule); padding: 6px 0; background: none; cursor: pointer; margin-top: 16px; }
.retry:hover { border-color: var(--ink); }
.noscript-note { text-align: center; font-size: 14px; color: var(--muted); }

.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 88px; border-top: 1px solid var(--rule); color: var(--muted); }
.site-footer p { margin: 0; font-size: 12px; letter-spacing: 0.015em; }

@media (min-width: 1440px) {
  .introduction { padding-top: 80px; padding-bottom: 96px; }
  .crest { width: 165px; }
}
@media (max-width: 900px) {
  .wrap { width: calc(100% - 64px); }
  .book-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .wrap { width: calc(100% - 40px); }
  .site-header { min-height: 84px; }
  .brand > span { font-size: 12px; }
  .brand img { width: 26px; height: 30px; }
  .nav-link { font-size: 14px; gap: 12px; min-height: 44px; padding-inline: 3px; }
  .introduction { padding: 52px 0 60px; }
  .crest { width: 120px; margin-bottom: 28px; }
  h1 { font-size: clamp(38px, 10vw, 58px); max-width: 430px; margin-inline: auto; }
  .tagline { font-size: 16px; margin-top: 18px; }
  .books { padding-bottom: 40px; }
  .catalogue { padding-top: 26px; }
  .empty-state { padding: 24px 0 28px; }
  .empty-state .empty-title { font-size: 26px; }
  .empty-state p { font-size: 14px; }
  .book-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .site-footer { min-height: 80px; }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  a { transition: color 150ms ease; }
}